Q. How many solutions does the system of equations below have?y=9x+5y=9x−43Choices:(A)no solution(B)one solution(C)infinitely many solutions
Analyze System: Analyze the given system of equations to determine the number of solutions.The system of equations is:y=9x+5y=9x−43To find the number of solutions, we need to compare the slopes and y-intercepts of the two lines represented by these equations.
Identify Slopes and Y-Intercepts: Identify the slopes and y-intercepts of both equations.For the first equation, y=9x+5, the slope(m1) is 9 and the y-intercept(b1) is 5.For the second equation, y=9x−43, the slope (m2) is also 9 and the y-intercept (b2) is −43.
Compare Lines: Compare the slopes and y-intercepts of the two lines.Since both lines have the same slope m1=m2=9, they are parallel to each other.However, their y-intercepts are different b1=5 and b2=−43.Parallel lines with different y-intercepts do not intersect and therefore have no points in common.
Conclude Number of Solutions: Conclude the number of solutions based on the comparison.Because the lines are parallel and have different y-intercepts, they will never intersect. Therefore, the system of equations has no solution.
More problems from Determine the number of solutions to a system of equations in three variables